Companion for SwiftUI is an interactive documentation of all the SwiftUI views, shapes, protocols, scenes, styles, property wrappers and environment values found in all platforms (iOS, macOS, tvOS and watchOS). The latest update includes all WWDC 2022 additions, and the app now has more than 2000 entries.

The application includes examples for everything. A great deal of them are interactive and run embedded in the app. By using the associated controls, you'll see the immediate effects it has on the views, and how the code changes to produce such results.

Examples may be copied and pasted in Xcode, and are ready to run.

Whether you are working on a legacy project, or learning the new additions from WWDC '22, you may create filters that hide the irrelevant areas of the API. You may have multiple tabs open, each with a different filter.

You don't know what the control point in a quad curve is? No problem, open the .addQuadCurve() entry and drag the points of the curve to see how the parameters of the function change. It's instant knowledge, that will accelerate your learning curve dramatically.